Buffalo Bill and the Indians, or Sitting Bulls History Lesson (1976)

Robert Altman’s Buffalo Bill and the Indians (starring Paul Newman) is a sharp, irreverent deconstruction of the American myth. Set within Buffalo Bill’s Wild West Show, it exposes the spectacle, ego, and hypocrisy behind America’s self-made legends — a biting satire of celebrity, show business, and national mythology from one of cinema’s great iconoclasts.

Powerhouse films

An all-star cast – including Paul Newman, Burt Lancaster, Geraldine Chaplin, Joel Grey, Harvey Keitel, and Shelley Duvall – assembles for Robert Altman’s follow-up to his 1975 critical success, Nashville. Swapping the country-and-western scene for Buffalo Bill’s ‘Wild West’ shows of the late nineteenth century, the film is another of Altman’s pitch-perfect satires, offering a sidelong glance at the myths of America.

Från IMDB:
A cynical Buffalo Bill hires Sitting Bull to exploit him and add his credibility to the distorted view of history presented in his Wild West Show.